From: Zhao Zhili <quinkblack@foxmail.com>
To: ffmpeg-devel@ffmpeg.org
Cc: Zhao Zhili <zhilizhao@tencent.com>
Subject: [FFmpeg-devel] [PATCH] avfilter/vf_vibrance: Fix default value of rlum/blum
Date: Tue, 15 Jul 2025 17:29:32 +0800
Message-ID: <tencent_1457B99C30E0FE5A883485818C35873E6309@qq.com> (raw)
From: Zhao Zhili <zhilizhao@tencent.com>
Fix #9195
---
It looks like vf_vibrance.c is similar to
https://github.com/zachsaw/RenderScripts/blob/master/RenderScripts/ImageProcessingShaders/SweetFX/Vibrance.hlsl
and
https://github.com/kevinlekiller/kwin-effect-shaders_shaders/blob/main/Vibrance.frag
Originall written by Christian Cann Schuldt Jensen ~ CeeJay.dk.
They use same matrix coeff.
libavfilter/vf_vibrance.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavfilter/vf_vibrance.c b/libavfilter/vf_vibrance.c
index 960b7e1b13..94c3d569c6 100644
--- a/libavfilter/vf_vibrance.c
+++ b/libavfilter/vf_vibrance.c
@@ -423,9 +423,9 @@ static const AVOption vibrance_options[] = {
{ "rbal", "set the red balance value", OFFSET(balance[2]), AV_OPT_TYPE_FLOAT, {.dbl=1}, -10, 10, VF },
{ "gbal", "set the green balance value", OFFSET(balance[0]), AV_OPT_TYPE_FLOAT, {.dbl=1}, -10, 10, VF },
{ "bbal", "set the blue balance value", OFFSET(balance[1]), AV_OPT_TYPE_FLOAT, {.dbl=1}, -10, 10, VF },
- { "rlum", "set the red luma coefficient", OFFSET(lcoeffs[2]), AV_OPT_TYPE_FLOAT, {.dbl=0.072186}, 0, 1, VF },
+ { "rlum", "set the red luma coefficient", OFFSET(lcoeffs[2]), AV_OPT_TYPE_FLOAT, {.dbl=0.212656}, 0, 1, VF },
{ "glum", "set the green luma coefficient", OFFSET(lcoeffs[0]), AV_OPT_TYPE_FLOAT, {.dbl=0.715158}, 0, 1, VF },
- { "blum", "set the blue luma coefficient", OFFSET(lcoeffs[1]), AV_OPT_TYPE_FLOAT, {.dbl=0.212656}, 0, 1, VF },
+ { "blum", "set the blue luma coefficient", OFFSET(lcoeffs[1]), AV_OPT_TYPE_FLOAT, {.dbl=0.072186}, 0, 1, VF },
{ "alternate", "use alternate colors", OFFSET(alternate), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, VF },
{ NULL }
};
--
2.46.0
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